A072740 X-projection of the tabular N X N -> N bijection A072734.

0, 1, 0, 2, 0, 0, 4, 3, 0, 0, 6, 5, 1, 0, 0, 8, 7, 2, 1, 0, 0, 10, 9, 3, 1, 1, 0, 0, 12, 11, 5, 4, 1, 1, 0, 0, 14, 13, 7, 6, 2, 1, 1, 0, 0, 16, 15, 9, 8, 3, 2, 1, 1, 0, 0, 18, 17, 11, 10, 4, 2, 2, 1, 1, 0, 0, 20, 19, 13, 12, 6, 5, 2, 2, 1, 1, 0, 0, 22, 21, 15, 14, 8, 7, 3, 2, 2, 1, 1, 0, 0, 24, 23

Offset

0,4

Links

Table of n, a(n) for n=0..92.

Prog

(Scheme) (define (A072740 n) (A025581 (A072735 n)))

Crossrefs

The Y-projection is A072741. Composition of A025581 and A072735. A072783(n) = A072740(n)-A072736(n).

Sequence in context: A147592 A108885 A341654 * A226288 A185146 A080964

Adjacent sequences: A072737 A072738 A072739 * A072741 A072742 A072743

Keyword

nonn,tabl

Author

Antti Karttunen, Jun 12 2002

Status

approved